It's certainly not time to cut ties with Khalil Herbert quite yet, as Montgomery isn't a full-go for Sunday. Herbert has been incredibly efficient when given opportunities, averaging 6.1 yards per carry and 7.4 yards per reception when on the field. It's not farfetched to assume that Herbert has earned a role in the offense even if/when Montgomery returns to the lineup.
There's no reason to assume that Hines wouldn't be the first person in the rotation, but Lindsay will be sure to get a fair share of touches. This doesn't make him viable in typical redraft leagues, but could be a play for TNF Showdown slates.
Though Kye Pitts is a unique brand of athlete on the field, at least some of his usage would presumably fall to the tight ends behind him. None of which will operate out of the slot or out wide, but could be usable as a TE punt in DFS, namely, former Titans TE Anthony Firkser. For the sake of the Atlanta Falcons puttering pass game, let's just hope this is a minor setback.